mesityl

noun

mes·​i·​tyl

plural -s

1

: a hypothetical radical C₃H₅ of which mesityl oxide was once regarded as the oxide and acetone as the hydroxide

2

: either of two univalent radicals C₉H₁₁ derived from mesitylene by removal of one hydrogen atom:

a

: the substituted phenyl radical (CH₃)₃C₆H₂−

b

: the substituted benzyl radical (CH₃)₂C₆H₃CH₂−; 3,5-dimethyl-benzyl

called also alpha-mesityl

Word History

Etymology

Greek mesitēs mediator + English -yl

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